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Set Up DKIM For Multiple Domains On Postfix With dkim-milter 2.8.x (CentOS 5.3)

Set Up DKIM For Multiple Domains On Postfix With dkim-milter 2.8.x (CentOS 5.3)

This tutorial shows how you can sign your email messages by using DKIM (DomainKeys Identified Mail) for multiple domains. Signing email allows the recipient of a message to confirm a message originated with the sender's domain and that the message content has not been altered.

Configuring fail2ban With SquirrelMail On Debian Lenny 5.0/ISPConfig 3

Configuring fail2ban With SquirrelMail On Debian Lenny 5.0/ISPConfig 3

In this article I will show how to prevent brute force attacks with Fail2ban against your SquirrelMail Web login using the Squirrel Logger plugin.

How To Configure SquirrelMail To Allow Users To Change Their Email Passwords On An ISPConfig 3 Server

How To Configure SquirrelMail To Allow Users To Change Their Email Passwords On An ISPConfig 3 Server

This guide explains how you can configure your SquirrelMail webmail application on an ISPConfig 3 server so that email users can change their passwords themselves directly in SquirrelMail.

Configuring fail2ban With SquirrelMail On CentOS 5.3/ISPConfig 3

Configuring fail2ban With SquirrelMail On CentOS 5.3/ISPConfig 3

This tutorial shows how you can prevent unlimited login attempts and hence brute force attacks against your SquirrelMail web login by using fail2ban.

How To Log Emails Sent With PHP's mail() Function To Detect Form Spam

How To Log Emails Sent With PHP's mail() Function To Detect Form Spam

If you are running a webserver you might have faced the problem already: somewhere on your server is a vulnerable contact form or CMS system written in PHP that gets abused by spammers to send emails trough your server. If you have more than a few websites, it is a pain to detect which of the sites is vulnerable and sends the spam emails. This tutorial explains the installation of a small wrapper script which logs email messages sent trough the PHP mail() function.

Virtual Mail And FTP Hosting With iRedMail And Pure-FTPd

Virtual Mail And FTP Hosting With iRedMail And Pure-FTPd

iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less than 2 minutes. Since iRedMail 0.5, it supports Debian 5.0.1 and Ubuntu 8.04 & Ubuntu 9.04 (both i386 and x86_64). iRedMail supports both OpenLDAP and MySQL as backends for storing virtual domains and users. The OpenLDAP backend of iRedMail allows you to integrate all kinds of applications. This guide shows you how to integrate pure-ftpd into the iRedMail ldap backend on CentOS 5.x, passwords will be stored in ldap and you can change the password through webmail.

Goldfish, A PHP Autoresponder Script

Goldfish, A PHP Autoresponder Script For The HowtoForge "Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail " Setups

Goldfish is a quite simple autoresponder script (written in PHP) for Postfix. It consists of only one PHP file which can be started through a cronjob. It works with our "Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail" tutorials (it cannot be used for other setups, especially Postfix setups that don't use a MySQL database).

How To Install Qmailtoaster (CentOS 5.3)

How To Install Qmailtoaster (CentOS 5.3)

Qmailtoaster is a project that aims to make the installation of Qmail onto RPM based systems a snap. All of the packages are distributed in source RPMs so building the packages for your particular distro and architecture is as easy as running a script or a simple command for each package. The RPMs have all of the needed and commonly asked for patches included so you can have a mail server up and running in about an hour. When it's all complete, you'll have a full Qmail mail server installation ready for just about anything. I personally run Qmailtoaster servers for other companies and ISPs who have tens of thousands of users on their systems.

The Perfect SpamSnake - Ubuntu Jaunty Jackalope

The Perfect SpamSnake - Ubuntu Jaunty Jackalope

This tutorial shows how to set up an Ubuntu Jaunty Jackalope based server as a spamfilter in Gateway mode. In the end, you will have a SpamSnake Gateway which will relay clean emails to your MTA. You will also be able to view your incoming queue, train your SpamSnake and carry out a few more advanced operations via MailWatch.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 9.04)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 9.04)

This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

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